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$a_{1} x^{2} + b_{2} x + c_{1} = 0$ এবং $a_{2} x^{2} + b_{2} x + c_{2} = 0$ সমীকরণ দুইটি মূলই সাধারণ হওয়ার শর্ত কোনটি ?

a_{1} = b_{1} = c_{1}

\frac{a_{1}}{a_{2}} = \frac{b_{1}}{b_{2}} = \frac{c_{1}}{c_{2}}

\frac{a_{1}}{b_{2}} = \frac{b_{1}}{a_{2}} = \frac{c_{1}}{c_{2}}

কোনো সাধারণ মূল নেই

ANS : 2

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